Primilary import of new db stuff

4 files changed, 484 insertions, 0 deletions

diff --git a/framework/Db/schema/oci/TOciColumnSchema.php b/framework/Db/schema/oci/TOciColumnSchema.php
new file mode 100755
index 00000000..04730f82
--- /dev/null
+++ b/framework/Db/schema/oci/TOciColumnSchema.php
@@ -0,0 +1,56 @@
+<?php
+/**
+ * TOciColumnSchema class file.
+ *
+ * @author Ricardo Grana <rickgrana@yahoo.com.br>
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright &copy; 2008-2009 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+prado::using('System.Db.schema.TDbColumnSchema');
+
+/**
+ * TOciColumnSchema class describes the column meta data of a Oracle table.
+ *
+ * @author Ricardo Grana <rickgrana@yahoo.com.br>
+ * @version $Id: TOciColumnSchema.php
+ * @package system.db.schema.oci
+ * @since 1.0.5
+ */
+class TOciColumnSchema extends TDbColumnSchema
+{
+	/**
+	 * Extracts the PHP type from DB type.
+	 * @param string DB type
+	 */
+	protected function extractOraType($dbType){
+		if(strpos($dbType,'FLOAT')!==false) return 'double';
+
+		if ((strpos($dbType,'NUMBER')!==false) or
+			(strpos($dbType,'INTEGER')!==false))
+		{
+			if(strpos($dbType,'(') && preg_match('/\((.*)\)/',$dbType,$matches))
+			{
+				$values=explode(',',$matches[1]);
+				if(isset($values[1]) and (((int)$values[1]) > 0))
+					return 'double';
+				else return 'integer';
+			}
+		}else{
+			return 'string';
+		}
+	}
+	protected function extractType($dbType)
+	{
+		$this->type=$this->extractOraType($dbType);
+	}
+
+	protected function extractDefault($defaultValue)
+	{
+		if(strpos($dbType,'timestamp')!==false)
+			$this->defaultValue=null;
+		else
+			parent::extractDefault($defaultValue);
+	}
+}
diff --git a/framework/Db/schema/oci/TOciCommandBuilder.php b/framework/Db/schema/oci/TOciCommandBuilder.php
new file mode 100755
index 00000000..fc8b8dc9
--- /dev/null
+++ b/framework/Db/schema/oci/TOciCommandBuilder.php
@@ -0,0 +1,122 @@
+<?php
+/**
+ * TOciCommandBuilder class file.
+ *
+ * @author Ricardo Grana <rickgrana@yahoo.com.br>
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright &copy; 2008-2009 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+prado::using('System.db.schema.TDbCommandBuilder');
+
+/**
+ * TOciCommandBuilder provides basic methods to create query commands for tables.
+ *
+ * @author Ricardo Grana <rickgrana@yahoo.com.br>
+ * @version $Id$
+ * @package system.db.schema.oci
+ * @since 1.0.5
+ */
+class TOciCommandBuilder extends TDbCommandBuilder
+{
+	/**
+	 * @var integer the last insertion ID
+	 */
+	public $returnID;
+
+	/**
+	 * Returns the last insertion ID for the specified table.
+	 * @param mixed the table schema ({@link TDbTableSchema}) or the table name (string).
+	 * @return mixed last insertion id. Null is returned if no sequence name.
+	 */
+	public function getLastInsertID($table)
+	{
+		return $this->returnID;
+	}
+
+	/**
+	 * Alters the SQL to apply LIMIT and OFFSET.
+	 * Default implementation is applicable for PostgreSQL, MySQL and SQLite.
+	 * @param string SQL query string without LIMIT and OFFSET.
+	 * @param integer maximum number of rows, -1 to ignore limit.
+	 * @param integer row offset, -1 to ignore offset.
+	 * @return string SQL with LIMIT and OFFSET
+	 */
+	public function applyLimit($sql,$limit,$offset)
+	{
+		if (($limit < 0) and ($offset < 0)) return $sql;
+
+		$filters = array();
+		if($offset>0){
+			$filters[] = 'rowNumId >= '.(int)$offset;
+		}
+
+		if($limit>=0){
+			$filters[]= 'rownum <= '.(int)$limit;
+		}
+
+		if (count($filters) > 0){
+			$filter = implode(' and ', $filters);
+			$filter= " WHERE ".$filter;
+		}else{
+			$filter = '';
+		}
+
+
+		$sql = <<<EOD
+				WITH USER_SQL AS ({$sql}),
+				   PAGINATION AS (SELECT USER_SQL.*, rownum as rowNumId FROM USER_SQL)
+				SELECT *
+				FROM PAGINATION
+				{$filter}
+EOD;
+
+		return $sql;
+	}
+
+	/**
+	 * Creates an INSERT command.
+	 * @param mixed the table schema ({@link TDbTableSchema}) or the table name (string).
+	 * @param array data to be inserted (column name=>column value). If a key is not a valid column name, the corresponding value will be ignored.
+	 * @return TDbCommand insert command
+	 */
+	public function createInsertCommand($table,$data)
+	{
+		$this->ensureTable($table);
+		$fields=array();
+		$values=array();
+		$placeholders=array();
+		foreach($data as $name=>$value)
+		{
+			if(($column=$table->getColumn($name))!==null && ($value!==null || $column->allowNull))
+			{
+				$fields[]=$column->rawName;
+				if($value instanceof TDbExpression)
+					$placeholders[]=(string)$value;
+				else
+				{
+					$placeholders[]=':'.$name;
+					$values[':'.$name]=$column->typecast($value);
+				}
+			}
+		}
+
+		$sql="INSERT INTO {$table->rawName} (".implode(', ',$fields).') VALUES ('.implode(', ',$placeholders).')';
+
+		if(is_string($table->primaryKey))
+		{
+			$sql.=" RETURNING ".$table->primaryKey." INTO :RETURN_ID";
+			$command=$this->getDbConnection()->createCommand($sql);
+			$command->bindParam(':RETURN_ID', $this->returnID, PDO::PARAM_INT, 12);
+			$table->sequenceName='RETURN_ID';
+		}
+		else
+			$command=$this->getDbConnection()->createCommand($sql);
+
+		foreach($values as $name=>$value)
+			$command->bindValue($name,$value);
+
+		return $command;
+	}
+}
\ No newline at end of file
diff --git a/framework/Db/schema/oci/TOciSchema.php b/framework/Db/schema/oci/TOciSchema.php
new file mode 100755
index 00000000..5c4dd8e2
--- /dev/null
+++ b/framework/Db/schema/oci/TOciSchema.php
@@ -0,0 +1,278 @@
+<?php
+/**
+ * TOciSchema class file.
+ *
+ * @author Ricardo Grana <rickgrana@yahoo.com.br>
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright &copy; 2008-2009 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+prado::using('System.db.schema.TDbSchema');
+
+/**
+ * TOciSchema is the class for retrieving metadata information from a PostgreSQL database.
+ *
+ * @author Ricardo Grana <qiang.xue@gmail.com>
+ * @version $Id$
+ * @package system.db.schema.oci
+ * @since 1.0.5
+ */
+class TOciSchema extends TDbSchema
+{
+	private $_defaultSchema = '';
+	private $_sequences=array();
+
+	/**
+	 * Quotes a table name for use in a query.
+	 * @param string table name
+	 * @return string the properly quoted table name
+	 */
+	public function quoteTableName($name)
+	{
+		return $name;
+	}
+
+	/**
+	 * Quotes a column name for use in a query.
+	 * @param string column name
+	 * @return string the properly quoted column name
+	 */
+	public function quoteColumnName($name)
+	{
+		return $name;
+	}
+
+	/**
+	 * Creates a command builder for the database.
+	 * This method may be overridden by child classes to create a DBMS-specific command builder.
+	 * @return TDbCommandBuilder command builder instance
+	 */
+	protected function createCommandBuilder()
+	{
+		return new TOciCommandBuilder($this);
+	}
+
+	/**
+     * @param string default schema.
+     */
+    public function setDefaultSchema($schema)
+    {
+		$this->_defaultSchema=$schema;
+    }
+
+    /**
+     * @return string default schema.
+     */
+    public function getDefaultSchema()
+    {
+		if (!strlen($this->_defaultSchema))
+		{
+			$this->setDefaultSchema(strtoupper($this->getDbConnection()->username));
+		}
+
+		return $this->_defaultSchema;
+    }
+
+    /**
+     * @param string table name with optional schema name prefix, uses default schema name prefix is not provided.
+     * @return array tuple as ($schemaName,$tableName)
+     */
+    protected function getSchemaTableName($table)
+    {
+		$table = strtoupper($table);
+		if(count($parts= explode('.', str_replace('"','',$table))) > 1)
+			return array($parts[0], $parts[1]);
+		else
+			return array($this->getDefaultSchema(),$parts[0]);
+    }
+
+	/**
+	 * Creates a table instance representing the metadata for the named table.
+	 * @return TDbTableSchema driver dependent table metadata.
+	 */
+	protected function createTable($name)
+	{
+		$table=new TOciTableSchema;
+		$this->resolveTableNames($table,$name);
+
+		if(!$this->findColumns($table))
+			return null;
+		$this->findConstraints($table);
+
+		return $table;
+	}
+
+	/**
+	 * Generates various kinds of table names.
+	 * @param TOciTableSchema the table instance
+	 * @param string the unquoted table name
+	 */
+	protected function resolveTableNames($table,$name)
+	{
+		$parts=explode('.',str_replace('"','',$name));
+		if(isset($parts[1]))
+		{
+			$schemaName=$parts[0];
+			$tableName=$parts[1];
+		}
+		else
+		{
+			$schemaName=$this->getDefaultSchema();
+			$tableName=$parts[0];
+		}
+
+		$table->name=$tableName;
+		$table->schemaName=$schemaName;
+		if($schemaName===$this->getDefaultSchema())
+			$table->rawName=$this->quoteTableName($tableName);
+		else
+			$table->rawName=$this->quoteTableName($schemaName).'.'.$this->quoteTableName($tableName);
+	}
+
+	/**
+	 * Collects the table column metadata.
+	 * @param TOciTableSchema the table metadata
+	 * @return boolean whether the table exists in the database
+	 */
+	protected function findColumns($table)
+	{
+		list($schemaName,$tableName) = $this->getSchemaTableName($table->name);
+
+		$sql=<<<EOD
+SELECT a.column_name, a.data_type ||
+    case
+        when data_precision is not null
+            then '(' || a.data_precision ||
+                    case when a.data_scale > 0 then ',' || a.data_scale else '' end
+                || ')'
+        when data_type = 'DATE' then ''
+        else '(' || to_char(a.data_length) || ')'
+    end as data_type,
+    a.nullable, a.data_default,
+    (   SELECT D.constraint_type
+        FROM ALL_CONS_COLUMNS C
+        inner join ALL_constraints D on D.OWNER = C.OWNER and D.constraint_name = C.constraint_name
+        WHERE C.OWNER = B.OWNER
+           and C.table_name = B.object_name
+           and C.column_name = A.column_name
+           and D.constraint_type = 'P') as Key
+FROM ALL_TAB_COLUMNS A
+inner join ALL_OBJECTS B ON b.owner = a.owner and ltrim(B.OBJECT_NAME) = ltrim(A.TABLE_NAME)
+WHERE
+    a.owner = '{$schemaName}'
+	and b.object_type = 'TABLE'
+	and b.object_name = '{$tableName}'
+ORDER by a.column_id
+EOD;
+
+		$command=$this->getDbConnection()->createCommand($sql);
+
+		if(($columns=$command->queryAll())===array()){
+			return false;
+		}
+
+		foreach($columns as $column)
+		{
+			$c=$this->createColumn($column);
+
+			$table->columns[$c->name]=$c;
+			if($c->isPrimaryKey)
+			{
+				if($table->primaryKey===null)
+					$table->primaryKey=$c->name;
+				else if(is_string($table->primaryKey))
+					$table->primaryKey=array($table->primaryKey,$c->name);
+				else
+					$table->primaryKey[]=$c->name;
+			}
+		}
+		return true;
+	}
+
+	/**
+	 * Creates a table column.
+	 * @param array column metadata
+	 * @return TDbColumnSchema normalized column metadata
+	 */
+	protected function createColumn($column)
+	{
+		$c=new TOciColumnSchema;
+		$c->name=$column['COLUMN_NAME'];
+		$c->rawName=$this->quoteColumnName($c->name);
+		$c->allowNull=$column['NULLABLE']==='Y';
+		$c->isPrimaryKey=strpos($column['KEY'],'P')!==false;
+		$c->isForeignKey=false;
+		$c->init($column['DATA_TYPE'],$column['DATA_DEFAULT']);
+
+		return $c;
+	}
+
+	/**
+	 * Collects the primary and foreign key column details for the given table.
+	 * @param TOciTableSchema the table metadata
+	 */
+	protected function findConstraints($table)
+	{
+		$sql=<<<EOD
+		SELECT D.constraint_type, C.COLUMN_NAME, C.position, D.r_constraint_name,
+                E.table_name as table_ref, f.column_name as column_ref
+        FROM ALL_CONS_COLUMNS C
+        inner join ALL_constraints D on D.OWNER = C.OWNER and D.constraint_name = C.constraint_name
+        left join ALL_constraints E on E.OWNER = D.r_OWNER and E.constraint_name = D.r_constraint_name
+        left join ALL_cons_columns F on F.OWNER = E.OWNER and F.constraint_name = E.constraint_name and F.position = c.position
+        WHERE C.OWNER = '{$table->schemaName}'
+           and C.table_name = '{$table->name}'
+           and D.constraint_type <> 'P'
+        order by d.constraint_name, c.position
+EOD;
+		$command=$this->getDbConnection()->createCommand($sql);
+		foreach($command->queryAll() as $row)
+		{
+			if($row['constraint_type']==='R')   // foreign key
+			{
+				$name = $row["COLUMN_NAME"];
+				$table->foreignKeys[$name]=array($row["TABLE_REF"], array($row["COLUMN_REF"]));
+				if(isset($table->columns[$name]))
+					$table->columns[$name]->isForeignKey=true;
+			}
+
+		}
+	}
+
+
+	/**
+	 * Returns all table names in the database.
+	 * @return array all table names in the database.
+	 */
+	protected function findTableNames($schema='')
+	{
+		if($schema==='')
+		{
+			$sql=<<<EOD
+SELECT table_name, '{$schema}' as table_schema FROM user_tables
+EOD;
+			$command=$this->getDbConnection()->createCommand($sql);
+		}
+		else
+		{
+			$sql=<<<EOD
+SELECT object_name as table_name, owner as table_schema FROM all_objects
+WHERE object_type = 'TABLE' AND owner=:schema
+EOD;
+			$command=$this->getDbConnection()->createCommand($sql);
+			$command->bindParam(':schema',$schema);
+		}
+
+		$rows=$command->queryAll();
+		$names=array();
+		foreach($rows as $row)
+		{
+			if($schema===$this->getDefaultSchema())
+				$names[]=$row['table_name'];
+			else
+				$names[]=$row['schema_name'].'.'.$row['table_name'];
+		}
+		return $names;
+	}
+}
diff --git a/framework/Db/schema/oci/TOciTableSchema.php b/framework/Db/schema/oci/TOciTableSchema.php
new file mode 100755
index 00000000..3f34292d
--- /dev/null
+++ b/framework/Db/schema/oci/TOciTableSchema.php
@@ -0,0 +1,28 @@
+<?php
+/**
+ * TOciTableSchema class file.
+ *
+ * @author Ricardo Grana <rickgrana@yahoo.com.br>
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright &copy; 2008-2009 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+prado::using('System.db.schema.TDbTableSchame');
+
+/**
+ * TOciTableSchema represents the metadata for a Ora table.
+ *
+ * @author Ricardo Grana <rickgrana@yahoo.com.br>
+ * @version $Id$
+ * @package system.db.schema.oci
+ * @since 1.0.5
+ */
+class TOciTableSchema extends TDbTableSchema
+{
+	/**
+	 * @var string name of the schema (database) that this table belongs to.
+	 * Defaults to null, meaning no schema (or the current database).
+	 */
+	public $schemaName;
+}